Wow. That's a LOT of traffic cones.
Hernan, good topic. As a long-time street rider and budding track junkie, this is something that's high up on my skills-to-practice list.
I struggle a bit with it... reason being the same as any skill envelope expansion. I don't know what to look for, or what signals will tell me I'm getting too close to the limit.
This causes me to be timid, because I don't want to chuck my bike (and my brittle old body) on the ground.
This probably comes down to the good old trust issue. How hard can you lean on your bike before it'll give way?
There's also the assessment issue that comes with any skills development. What does "good" feel like? Hard to tell sometimes. Maybe I'm doing it right and don't even know it.